• Perfect Fit
• Lithium Battery
• Recharge from a normal cellphone charger
• Protected System
• Exceptional Battery Life
• Much Lighter than normal  D Cell Alkaline Batteries
• Charging Protection Board
• Type C USB interface

Input voltage: 5V (Standard Mobile Phone Charger)
Battery overcharge protection.
Battery over-current protection.
Input interface: TYPE-C

LED charge indicator:

• Red Led ON charging mode. when fully charge. LED
• Blue LED on Fully Charged.